Island



(No Model.) 2 Sheets+-Sh eet 1.

E. O. BENSON. FEEDER FOR TACK 0R NAIL MACHINES.

Patented Apr. 18, 1893.

Q\ v n WITNESSES INS/ENTER:

(No Model.) 7 2 Sheets-Sheet 2. E. O. BENSON.

FEEDER POE TACK 0R NAIL MACHINES. 1 No. 495,774. Patented Apr. 18, 1893.

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Min STATES PATENT OFFICE,

EDGAR O. BENSON, OF PROVIDENCE, RHODE ISLAND.

FEEDER FOR TACK OR NAIL MACHINES.

SPECIFICATION forming part of Letters Patent No. 495,774, dated April 18, 1893.

Application filed March 28,1892. Serial No. 426,757. (No model.)

To all whom it may concern.-

Be it known that I, EDGAR O. BENSON, of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Feeders for Tack or Nail Machines and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to improvements in devices by which a metal strip is continuously fed to the cutting-device of a tack or nail machine.

The object of the invention is to produce a feeding-mechanism by which a strip wound on a reel may be fed to the cutting-device of a tack or nail machine, at a predetermined speed and in alternating positions, to present the end of the strip to the cutter at a proper angle.

The invention consists inthe peculiar construction and arrangement of the oscillating guide and tube, and the combination therewith of the feeding-device, together with other novel features of construction and combination of parts which will hereinafter be more fully described and pointed out in the claims.

Figure 1 represents. a front elevation of the feeding-device and the strip of metal wound on the reel. Fig. 2 represents a top view of the mechanism for operating the feed-rolls. Fig. 3 represents an enlarged top view of the ratchet-wheel and the compression and feedrolls. Fig. 4 represents an enlarged detail View of the pawl and its stroke-adjusting devlce.

Similar numbers of reference designate corresponding parts throughout the drawings.

In the drawings 5 represents a support adjacent to the feeding-device, and 6 is a reel journaled on a vertical shaft secured to said support, 7 being the stripof metal from which the tack-blanks are to be cut.

The bracket-arm 8 is secured to the frame of the tack-machine and carries the arm 9 adj ustable sidewise on a pivot extending through the arm 8 on which the feed-mechanism is supported, 10 being the usual reciprocatingrod ordinarily operated by the tack-machine to oscillate the guide-tube; secured to the adjustable arm 9 is a bracket 11 carrying the spring 12, to the forward end of which is secured a curved forked arm 13, the ends of which have bearings in which the pivots of the collar 14 are journaled, and in this collar is journaled the forward end of the tube 15 provided with the projecting-arm 16, having a bent end and a slot cut through such end, through which the metal strip is adapted to pass. The rear end portion of the tube 15 has a circumferential rib 17 bearing in a correspondingly shaped groove in the block 18 of the bracket 19 supported on the rear end of the arm 9; and also secured to this end of the arm 9 are the guides 2020, in which the rod 21 having a vertical slotted arm 22 is longitudinally movable. To the'end of this rod 21 is pivoted the spring-operated pawl 23 having a' drawing-tooth, and to the end of the bent arm 24, also secured to the rod 21, is pivoted the spring-operated pawl 25, having a pushingtooth. These pawls 23 and 25 are adapted to engage the teeth of the ratchet 26 supported between them to rotate the same when the rod 21 is reciprocated. The ratchet 26 is secured to the lower end of a shaft vertically journaled in the bracket-arm 27 secured to the bracket 19, the upper end of the shaft carryingafeed-roll28securedthereto. Asecond independently rotatable roll 28 is also journaled on a vertical shaft adjustably secured in this bracket-arm 27, and the rotation of the feed-roll 28 tends to move the strip 7 toward the tack-machine in a greater or less degree, depending on the degree of rotation imparted to said roll by the ratchet 26.

Transversely journaled in the rear end of the arm 9 is a shaft to the ends of which are secured the arms 29 and 30 extending in. opposite directions, while to one end of said shaft is also secured the upper slotted member 31, adapted to be clamped to the vertical arm 22 of the rod 21 by the sliding clamp 32, and depending from this end of the shaft is a member 33 pivoted at its lower end to the rear end of the reciprocating rod 10. To the ends of the arms 29 and 30 are secured straps 34 and 35 which extend upward on opposite sides of the tube 15, being bent over the top thereof and secured on opposite sides. It is obvious that the reciprocation of the rod 10,

will through the medium of the pawls 23 and 25, tend to rotate the ratchet 26,and the feedroll carried on the upper end of the shaft to which said ratchet is secured, and the degree of rotation of the feed-roll will be increased by the length of stroke given to the rod 21, this stroke being regulated by the adjustment of the clamp 32 in the slots of the arms 22 and the member 31; the reciprocation of this rod will also operate the arms 29 and 30, to suecessively draw the straps 34 and 35, and to oscillate the tube to the extent of a onehalf revolution, and by means of the slotted arm 16 will present first one side of the strip 7 and then the other to the action of the cutter,

so that the angle at which this end of the strip is cut will always be the same, although, gaging the angle continuously from one edge of the strip, it will be alternately an inward and an outward angle.

Having thus described my invention, I claim as new and desire to secure by Letters Patent v 1; In a feeding device for tack or nail machines having the arm 8 and the reciprocating-rod 10, the combination with the adj ustable-arm 9, and means supported thereby and operated by the rod 10 for half rotating the end of a strip of metal, of a member 33 pivoted to the end of said rod 10,and secured to a-transversely-journaled shaft, an upper vertically-slotted member 31 also secured to said shaft, a reciprocating-arm 21 provided witha slotted member 22 and a pawl 23 movable in the slides 2O supported on said arm 9, a clamp 32 movable in the slots of the members 31 and 22, a bent arm 24 provided with a pawl 25 secured to the arm 21, a ratchet 26 supported between said pawls and secured to the end of a vertically-journaled shaft carryinga feed-roll, and means for pressing the metal strip against such feed-roll, as described.

2. In a feeding-device for tack or nail machines, the combination with the guide-tube 15 rotatable in suitable bearings and having the slotted arm 16, the straps 34 and secured to opposite sides of said tube and extending around the same in opposite directions, the arms 29 and 30 secured to a transversely-journaled shaft, extending in opposite directions and secured at the outer ends to the lower ends of said straps, an upper slotted member 31 also secured to said shaft, and means for partially rotating said shaft, of the arm 21 longitudinally movable in slides and having a slotted member 22 adapted to be secured at any point in its length to a corresponding part of the member 31, a bent arm 24 secured to the arm 21, oppositely-operating spring-pawls 23 and 25 pivoted in the ends of said arms, a ratchet 26 adapted to be engaged by said pawls and secured to a shaft vertically journaled and carrying a feed-roll, and adjustable means for pressing the metal to be fed against said feed-roll, as and for the purpose described.

In witness whereof I have hereunto set my hand.

EDGAR O. BENSON. WVitnesses:

JOSEPH A. MILLER, J r., HENRY J. MILLER. 

